Onkyo DX-7555 User manual
DX-7555
SERVICE MANUAL
SERVICE MANUAL
COMPACT DISC PLAYER
Black, Silver and Golden models
MODEL DX-7555
Ref. No. 3911
122005
/ 092006
230-240V AC, 50Hz
230-240V AC, 50Hz
220-230V AC, 50/60Hz
220-230V AC, 50/60Hz
120V AC, 60Hz
120V AC, 60Hz
120V AC, 60Hz
BMPP
SMPP
GMGT
GMGR
GMDT
BMDC
SMDC
RC-625C
ON STANDBY
SEARCH
1 2 3
4 5 6
7 8 9
MEMORY
ENTER
DISPLAYDIMMER
SETUP
RANDOM REPEAT
ENTER
OPEN/CLOSE
10
10/0 CLR
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
DX-7555
SPECIFICATIONS
Signal readout :
Frequency response :
SN ratio :
Audio dynamic range :
THD (total harmonic distortion) :
Audio output
Digital optical :
Audio output / Impedance
Digital coaxial :
Audio output / Impedance
Analog :
Power supply :
Power consumption :
Standby power consumption :
Dimensions (W x H x D) :
Weight :
Operation condition
Temperature, humidity :
Supported discs :
Optical non-contact
2 Hz - 20 kHz
111 dB
100 dB
0.0027%
-22.5 dBm
0.5 Vp-p, 75 ohm
2.0 V (rms), 470 ohm
AC 230 - 240 V, 50 Hz
AC 220 - 230 V, 50/60 Hz
AC 120 V, 60 Hz
16 W / 14 W
European : 0.5 W
North American : 0.3 W
Others : 0.4 W / 0.3 W
435 x 111 x 405 mm
8.0 kg
5 - 35 , 5 - 85 % (no condensation)
CD, CD-R, CD-RW, MP3
(Discs that have not been properly finalized may only be
partially playable or not playable at all.)
Specifications and appearance are subject to change for
improvement without prior notice.
DX-7555
SERVICE PROCEDURE-1
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
PRECAUTIONS
This set employs a laser. Therefore, be sure to follow
carefully the instructions below when servicing.
WARNING!!
SERVICE WARNING : DO NOT APPROACH THE
LASER EXIT WITH THE EYE TOO CLOSELY.
IN CASE IT IS NECESSARY TO CONFIRM LASER
BEAM EMISSION, BE SURE TO OBSERVE FROM
A DISTANCE OF MORE THAN 30cm FROM THE
SURFACE OF THE OBJECTIVE LENS ON THE
OPTICAL PICKUP BLOCK.
Laser Diode Properties
Material: GaAS/GaAlAs
Wavelength: 760-800nm
Laser output: max. 0.5mW*
Emission Duration: continuous
*This output is the value measured at a distance about 1.8mm
from the objective lens surface on the Optical Pickup Block.
LASERWARNING LABEL
The labels shown below are affixed.
1. Warning label
2. Class 1 label
LUOKAN 1
LASERLAITE
KLASS 1
LASER APPARAT
CLASS 1 LASER
PRODUCT
Printed on rear panel
1. Ground for the work-desk.
Place a conductive sheet such as a sheet of copper
(with impedance lower than 10 Mohm) on the work-
desk and place the set on the conductive sheet so that
the chassis can be grounded.
2. Grounding for the test equipments and tools.
Test equipments and toolings should be grounded in
order that their ground level is the same the ground of
the power source.
3. Grounding for the human body.
Be sure to put on a wrist-strap for grounding whose
other end is grounded.
Be particularly careful when the workers wear
synthetic fiber clothes, or air is dry.
4. Select a soldering iron that permits no leakage and
have the tip of the iron well-grounded.
5. Do not check the laser diode terminals with the
probe of a circuit tester or oscilloscope.
DANGER:
INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCK FAILED OR DEFEATED. AVOID DIRECT
EXPOSURE TO BEAM.
CAUTION:
HAZARDOUS LASER AND ELECTROMAGNETIC
RADIATION WHEN OPEN AND INTERLOCK DEFEATED.
ATTENTION:
RAYONNEMENT LASER ET ELECTROMAGNETIQUE
DANGEREUX SI OUVERT AVEC L'ECLENCHEMENT
DE SECURITE ANNULE.
DX-7555
SERVICE PROCEDURE-2
FL display --->
0 0:00 NO DISC
--->
FL display MA 050830A SRV 5805A MODEL00 00
--->
Front panel
--- Bottom view ---
Lever
NO DISC
--->
1. Initialize the unit.
(1) Press and hold down the STOP [ ] button, then press the FF (fast forward) [ ] button. All segments light up.
(2) Press and hold down the STOP [ ] button, then press the PUSH TO ENTER (JOG) button.
(3) Press the POWER button to turn off the unit.
(4) Disconnect the AC power cord from a wall outlet.
2. Check the version of Main microprocessor (Q8005) and Servo microprocessor (Q1001).
(1) Connect the AC power cord into a wall outlet.
(2) Press the POWER button to turn on the unit.
(3) Change into the state of "NO DISC".
(4) Press and hold down the STOP [ ] button, then press the FF (fast forward) [ ] button twice.
The first press lights up all segments.
Main microprocessor version ---> Servo microprocessor version
(5) Press the POWER button to turn off the unit.
(6) Disconnect the AC power cord from a wall outlet.
3. Setting position before shipment.
(1) POWER button : OFF
(2) PHONES LEVEL : MIN.
4. Take out the Disc.
If cannot take out the disc, please take out disc as follows.
(1) The lever in the direction of the arrow.
(2) The tray is slowly drawn out by the hand.
DX-7555
EXPLODED VIEW
DX-7555
A026
x 3 pcs.
A024
x 4 pcs.
A104
x 3 pcs.
A012
x 3 pcs.
A012
x 6 pcs.
A012
x 6 pcs.
A012
x 2 pcs.
A012
x 5 pcs.
A070
x 2 pcs.
A014
x 4 pcs.
A076
x 4 pcs.
A060
x 2 pcs.
A016
x 4 pcs.
A103
x 4 pcs.
A074
x 4 pcs.
A074
x 8 pcs.
A060
x 2 pcs.
A136
x 2 pcs.
A088
x 2 pcs.
A030
x 2 pcs.
A105
x 4 pcs.
A012
x 10 pcs.
E004
A012
x 2 pcs.
A018
A090
A066
A090
A020
A044
A010
A048
A042
A058
A002
A056
U05
U08
U09
U01
U10
U02
U06
P1002 P7001
U07
A012
A028
A124
A141
A141
A126
E012
L001
A141
A073
E011
A006
A004 A090
A090
A090
A012
A090
A128
A052
A040
A032
A068
A034
A108
A100
A062
A036
A038
U03
U04
T902
A109
A110
x 10 pcs.
A072
x 3 pcs.
A130
E006
Z008 P1003
A102
P901
A901
A
A
B
C
B
C
D
D
Refer to
"EXPLODED VIEWS
OF MECHANISM" With MECHANISM
DX-7555
EXPLODED VIEWS OF MECHANISM-1
CD LOADER MECHA. Z001 : MGD-34
Parts No. 24800055C
33
Z002
12
25
06 26
16
05
20
x 2
15
18
x 2
09 11
08
Z006 x 2
Z006
Z003
x 2
Z003
14
04
30
17
22
18
24
01
07
18
x 2
13
18
x 2
21
21 Z006
19
03
03
28
02
32
10
19
20
23
31
x 2
Z005
Z004 x 2
(Gold)
(Silver)
Z007
Z005
Z003
(Silver)
18
Drive unit : KSM-213CLCM
Refer to
"EXPLODED VIEWS OF MECHANISM-2"
<Note>
CD MECHA. =
Loader mecha. : "MGD-34" + Drive unit : "KSM-213CLCM"
DX-7555
51
54
55
53
56
57
58
61
52
PARTS LIST
REF. NO. PART NO. (SN) DESCRIPTION
51
52
53
54
55
56
57
58
61
Motor chassis ass'y
Motor gear ass'y
Sled shaft
Gear (A) (S)
P2 x 3, Screw
Leaf switch
Motor PC board
Connector 6pin
KSS-213C, Pickup
EXPLODED VIEWS OF MECHANISM-2
CD DRIVE UNIT : KSM-213CLCM
X-2625-877-1
X2625-769-1
2626-908-01
24810023
7621-255-15
24840008
1639-678-12
1-564-722-11
8848-483-05
Q'TY
1
1
1
1
2
1
1
1
1
OK
NG
DX-7555
SCHEMATIC DIAGRAMS-1
DX-7555
A
1
2
3
4
5
BCDEFGH
DACLRCK
DACDATA
DACBCK
CDSCORI
VDD_CPU
VDD_CPU
CDSVSO
CDSVCK
CDSVRE
FLASHHS
FLASHCK
FLASHO
FLASHRST
FLASHI
VDSPD3.3V
CDDATA2
IREQ
C2PO
MNT2
MNT1
MNT0
FLASHVPI
VDD_CPU
CDOPENSW
CDCLOSESW
RFAC
VC
VDDC1.8V/2.5V
VDSPD3.3V
DOUT
ACM_H
ACM_L
DIS_COM+5V
CDSVRST
VDDC1.8V/2.5V
HP_-B
VDSPD3.3V
+B_R
+B
+B_L
D+3.3V
ACLOCKADJ
ACLOCKADJ
ACK_1
CDFOK
CDSCORI
ACK1
CDRESET
CDXLAT1
CDCLOK2
CDCLOCK_1
CDDATA_1
CDDATA2
CDOPEN
CDCLOSE
CDCLOSESW
CDOPENSW
CDSVRQ
CDSENS_1
CDDATA_1
IREQ_1
CDSVRQ
CDSVCK
DAC_SDO
DAC_RST
CDFOK_1
CDCLOSESW
CDOPENSW
CDCLOSE
CDOPEN
CDXLT_1
EXCLK
EXCLK
CDANAMUT
CDSVRQ
EXCLK
SO_1
SI_1
CL_1
REQ_1
ACLOCKADJ_1
SYS_+5V
CDRESET
REQ
SYS_GND
CDSVRQ
CDSVAK
CDSVRST
BACK_UP_EV5V
K0_1
REMO_IN_1
INT_K0_1
test
CDSVAK
CDSVRE
CDSVRST
RST
RI_OUT
RST
RI
HP_MUTE
HP_OUTR
MUTE_-B
AMUTE
MUTE_R
HP_MUTE
VSW_CPU
EV_GND
EV+5V
BACK_UP_EV5V
STBY_LED
REMO_IN_1
P-SUPPLY
MUTE_L
DIS_COM+5V
FL_AC_L
FL_AC_H
FL_AC_H
FL_AC_L
DIS_COM+5V
SRDR
TFDR
TRDR
FFDR
FRDR
SSTOP
SP-
SP+
SL+
SL-
VDDM
CDFOK
LD
E
F
A
B
C
D
SSTOP
PD
VCONT_MPU
VD+3.3V
+3.3V
DSP_+8VVSW8V
LD-
LD+
AVD1_+3.3V
XTAI
CDSENS
ACK
VC
-B_R
test
REQ_1
SO_1
SI_1
CL_1
OP_+8V
K0_1
ACK_1
BACK_UP_EV5V
P-ON
EV
EV_GND
VC
VDDPIC
SUB_RST
SUB_CL
SUB_SI
SUB_SO
EV_GND
SUB_REQ
REMO_IN
LED
K0
INT_K0
-VDISP
-VDISP_GND
FLAC1
FLAC2
VDDPIC
CDSVSI
CDXLAT_2
CDXLAT_1
SFDR
-B
-Vdisp_C
STBY_LED
DAC_LAC
DAC_CLK
CDSVRST_1
CDSVSI
CDSVCK
CDSVSI
CDSVSO
AC_-VDISP
AC_-VDISP
PDSENS
PDSENS
B
D
F
LD
PD
E
A
C
CDRESET
TFDR
TRDR
FRDR
FFDR
SL+
SL-
SP-
SP+
CLK2V
DAC_SCLK
DIS_COM+5V
EV+5V
CLK3.3V
MUTE_+B
REQ
CDRESET
OP_+8V
OP_+8V
OP_+8V_1
MUTE_+B_1
MUTE_+B
A+5V
VDSPD3.3V
MECHA_+B
MECHA_+B
SUBRST_1
SUBRST_1
TR+
TR-
FO+
FO-
FLASH_VPI
GNDD
GNDD
GND_CPU
GND_CPU
GNDD
GND_CPU
DSP_GND
DIS_GND
GNDD
MUTEGND
GND_CPU
MUTEGND
SUB_GND
-VDISP_GND_1
DIS_GND
GNDD
LD_GND
GNDD
GNDD
GNDM
DGND
DSP_GND
DIS_GND
GNDD
GND
GND
GNDM
GND_CPU
GND_CPU
P_GND
EV_GND_1
EV_GND_1
GNDM
DIS_GND
-VDISP_GND_1
MUTE_GND
GNDM
APGND
DGND
APGND
MUTE_GND_1
-VDISP_GND_1
GNDM
INT_K0_1
CDCLOCK_1
CDSVRE
CDSVSO
MUTE_GND_2
MUTE_GND_2
MUTE_GND_3
+5V
GND_D
DOUT_1
P-ON
K0_1
DAC_LAC
DAC_RST
DAC_SDO
DAC_CLK
RI_IN
P-OFF_1
P-OFF
P-OFF
-B_HP
+B_HP
AOUTL
AOUTR
HP_+B
A_GND
HP_OUTL
HP_-B
P_GND
CDCLOK_2
CDDATA_2
JL0002
JL0001
JL0004
JL0003
TRACKING
LD
VR
FO-
E
D
A
B
C
F
2.5V
5V VC
+5V
LD-G
PD
FOCUS
TR-
TR-
FO+
INSW
LD+
LD-
DGND
OUTSW
M
pick short terminal
SSTOP
3.3V
SL-
SL+
SP-
SP+
M
M
SERVO_+5V
Back up circuit
RI
DIGITAL OUT
no saving mode
<UJJ> Only
0R3005 NC
C3014 104 NC
UJJ ELSE
U3002 NC
NCR3006 0
CXD3014ARCXD3014R
R8057
R8060
0 ohm
0 ohm
NC
NC
C2035 NM
R2046
15K
C2034 102
C2033 NM
C2005 104Z
TP2003
MIRR
TP2004
DFCT
TP2001
COUT
TP2005
LOCK
5
R1038 100
C1019
P2004
1
CPUGND
2
CDSVSO
3
CDSVSI
4
CDSVCK
5
RST
6
EV5V
7
Vpp/test
8
NC
P2001 Error_Rate
1
2
3
4
5
6
C1016
R1017
1K
R1018
10K
R1020
C1014
C1013
R1008
10K
R1007
10K
1.5 to 1.6
TP2006
R2056
3.3K
R2051
10K
R2052
470K
C2046
332
R2060
15K
3.3
R2062
470K
C2061
101
R2036
0
C2011
104Z
C2016
104Z
R2014
22 R2015
22
C2028
104Z
R2028
10K
R2026
0
P7002
1
2
3
4
5
6
7
8
C9021
470/16
+
C4011
332
C8009 104Z
R8047
100
R1067 1K
R1070 1K
R1064 1K
D1001
1SS355
R1049
390
C8008
104Z
TP1001 CDRW
C9025
104J
5
R4066
560K
R2048 0
R2049 0
R2050 0
R2044
15K
R2043 0
R2045 0
R2041 0
R2040 0
3.3
R2019
0
P001B
1
2
3
4
5
6
C3009
C3010
C3008
C3001
224
C3013
104
C3012
330/16
+
Q8003
RN1407
Q3001
74HCU04AF
7GND
6
5
4
3
2
114
VCC
13
12
11
10
9
8
Q1002
TC7WT241FU
1G
2A1
3Y2
4GND 5
A2
6
Y1
7
G
8
VCC
Q1003
TC7WT241FU
1G
2A1
3Y2
4GND 5
A2
6
Y1
7
G
8
VCC
Q1004
TC7WT241FU
1G
2A1
3Y2
4GND 5
A2
6
Y1
7
G
8
VCC
Q8004
S-80145CLMC
3NC
2VSS
1DS 5
VCC
4
OUT
Q8002 BR93L56F-WE2
5DI
6DO
7GND
8NC 1
NC
2
Vcc
3
CS
4
SK
Q1005
TC7WZU04FU
5
6
7
8VD 1
2
3
4
GND
Q2001
BD7931F
1VCC
2M+
3M-
4POWGND 5
PREGND
6
CONT
7
REV_IN
8
FWD_IN
Q2003
CXD3014R
31 MIRR
32 DFCT
33 FOK
34 DVSS4
35 DVDD5
36 DVSS5
37 LOCK
38 MDP
39 SSTP
40 IOVSS4
41 SFDR
42 SRDR
43 TFDR
44 TRDR
45 FFDR
46 FRDR
47 IOVDD1
48 AVD1
49 AVS1
50 E
51 F
52 TEI
53 TEO
54 FEI
55 FEO
56 VC
57 A
58 B
59 C
60 D
61 AVD2
62 RFDCO
63 PDSENS
64 AC_SUM
65 EQ_IN
66 LD
67 PD
68 RFC
69 AVS2
70 RFACO
71 RFACI
72 AVD3
73 BIAS
74 ASYI
75 ASYO
76 VPCO
77 VCTL
78 AVS3
79 CLTV
80 FILO
81 FILI
82 PCO
83 SRAMVSS1
84 SRAMVDD1
85 SRAMSTB
86 DVDD1
87 DVSS1
88 TEST1
89 DATA
90 CLOK2
91
VSS2
92
VDD2
93
TEST2
94
TEST3
95
TEST4
96
TEST5
97
TEST6
98
DVSS2
99
DVDD2
100
IOVDD2
101
DOUT
102
TEST
103
TEST
104
IOVSS2
105
PLLAVD
106
PLLAVS
107
XVSS
108
XTAO
109
XTAI
110
XVDD
111
AVD4
112
AOUT1
113
VREFL
114
AVS4
115
AVSS
116
VREFR
117
AOUT2
118
AVD5
119
IOVDD3
120
IOVSS3
1
LRCK
2
LRCKI
3
PCMD
4
PCMDI
5
BCK
6
BCKI
7
XTACN
8
XRST
9
DVSS3
10
IREQ
11
CLOK
12
DATA2
13
XLAT2
14
REQ
15
ACK
16
XLAT
17
DVDD3
18
SRAMVSS3
19
SRAMVDD3
20
SENS
21
WFCK
22
XUGF
23
XPCK
24
GFS
25
C2PO
26
SCOR
27
DVDD4
28
COUT
29
SRAMVSS4
30
SRAMVDD4
Q4005
NE5532AP
6
5
7
Q4002
NE5532AP
3
2
1
P2005
8
NC 7
Vpp/test 6
EV5V 5
RST 4
CDSVCK 3
CDSVSI 2
CDSVSO 1
CPUGND
Q7003
2SD1644
Q7002
2SD1644
Q9005
UPC29M33HF
2G
1I3
O
Q2005
MPD120N25T1B
1O3
I
2
G
D9005
RL1N4003
D9006
RL1N4003
D9004
RL1N4003
C8002
2.2/50
+
D8002
D9001
UDZS4.7B
D8008
D8003
UDZS5.6B
Q8001
RN2403
D8001
D7001
RL1N4003
C7002
104J
L3001
BLM21B222SPT
L3002
BLM21B222SPT
R8011
470
L8001
BLM21B222SPT
T3001
NSRF-2046
U3001
TOTX141
1
GND
2
V
3
IN
P3101
RI_JACK
3
2
1
4
P9033 From_S_PT
1
2
3
4
5
P9001
For_M_PT
1
2
3
4
5
6
7
P2002
for_Jitter_Measure
2
1
P703
For_Freq_Measure
2
1
C8011
0.1F
+
D8007
D8006
R2020
22K
C2014
472
C2004
104Z
R2007
5.6K
C2043
104Z
C2007
104Z
C9007
C9009
C2006
104
C2054
C4027
104J
C4025
104J
C4026
104J
Q4008
2SD655
Q4006
2SD655
Q4009
2SD655
Q4007
2SD655
3 2
C1008
104Z
C8013
104Z
C8003
104
C2029
104Z
C2067
C3011
104
C9016
C1010
104Z
C9004
C9022
104Z
C1009
104Z
C2008
104Z
C2013
104
C2025
104Z
R2053
1K
C2058
104
C2052
100/16
+
C8012
104Z
C3006
223
C3003
223
C2001
473
C8004
473
C8005
473
C9011
474
C9010
474
C8014
33P
C8016
33P
C8015
33P
C8019
33P
C8018
33P
C8022
33P
C2032 681
C9014
22000/50
+
C4006
102
Q4003
NE5532AP
6
5
7
C4009
102
C4028
102
C4008
102
C4029
102
C4019
182
C4010
332
C2039
100/16
+
C2038
104Z
C2002 104Z
C2003 470/16
+
C2063
100/16
+
C2037
100/16
+
R2047 0
C2036
100/16
+
C1011
100/16
+
C9001
C2050
100/16
+
C9018
1000/16
+
C3007
330/16
+
C9003
330/16
+
C9017
330/16
+
C9020
470/16
+
C7001
470/16
+
C8010
2.2/50
+
C8024
2.2/50
+
C3002
22/50
+
C2010
22/50
+
C2015
22/50
+
C2012
47/50
+
C2017
47/50
+
R1004
NC
R1003
10K
R1002
10K
R1009
100
R1010
100
R1011
100
R1006
10K
R1005 10K
C1015
TP1002 CD2SPD
TP1003 CD4SPD
R1012
0
R1016
0
R1013
0
R1015
10K
R1037 0
R1033 0
R1032 0
R1029 0
R1027 0
R1025 0
R1021
R1026 0
R1028 0
R1024 0
R1022 0
R1023
R1030
10K
R1031
R1035
10K
R1034
10K
C1017
C1007
104Z
R1036
R1046
0
R1039 100
R1043 0
R1048
560
R1053
1K
R1055
1K
R1052
560
R1057
0
R1051
47
R1050
560
R1058
0
R1061 560
R1060 560
R1059 560
R1054
1K
R1068
R1065 R1066 R1069
R1062
0R1063
0
C1012
104Z
R1071
0
R1072
R2012 0
R2010 0
R2009 0
TP2002 WFCK
R2011 0
R2006
47K
R2001
560
R2008
15K
R2005
R2002
1K
R2013
22
R2018
0
R2016 0
R2027 0
R2030 0
R2023 0
R2025 0
R2034 0
R2032 0
R2022
R2035
R2031
0
R2039
0
R2055
100K
R2058
1M
R2054
4.7K
C2059
104Z
C2044
R2066 0
R2067 0
R2068 0
R2069 0
R2072
0
R3001
150
C3005
223
C3004
223
R3004
R4002
R4006
1.2K
R4004
1.2K
R4001
R4003
1.2K
R4005
1.2K
R4007
R4008
R4010
2.4K
R4012
2.4K
R4011
2.4K
R4009
2.4K
R4013
10K
R4015
10K
R4014
10K
R4016
10K
C4017
C4016
R4020
22(1/2W)
R4017
22(1/2W)
R4018
22(1/2W)
Q4003
NE5532AP
2
3
4
1
8
R4021
1.5K
R4023
22K
Q4002
NE5532AP
5
6
8
7
4
R4022
1.5K
R4024
22K
R4025
22K
R4026
22K
R4028
22K
R4027
22K
R4029
22K
R4031
1.5K
R4030
22K
R4032
1.5K
Q4004
NE5532AP
5
6
8
7
4
R4034
1.5K
R4035
R4037
R4039
4.7K
R4041
R4043
470K
R4044
470K R4045
10K
R4046
10K
R4047
220
R4051
220
R4052
220
R4048
220
R4050
10K
R4049
10K
R4055
560K
R4056
560K
R4054
220K
R4053
220K
R4057
0
R4065
0
R4058
0
R4067
220K
R4068
0
R7011
10k
R7010
10k
R8005 0
R8006 0
R8007 0
R8002
100
R8010
10K
R8004
220K
R8024 0
R8025 0
R8053
10K
R8052
10K
R8015
0
R8014
0
C8023
33P
R8017
0
R8012
10K
R8028
560
R8029
560
R8030
560
R8027
560
R8032
1K
R8031
1K
R8034
1K
R8036 10K
R8049
R8048
10K
R8046 1K
R8059
47K
R8057
R8050
1K
R8055
R8056
0
R8058
R8054
10K
R8061
R8060
R9008
0
R9006
33(1W)
R9001
22(1/2W)
R9003
22(1/2W)
C9013
22000/50
+
R9018
0
C3014
U3002
1
GND
2
V
3
IN
C4012
470/16
+
C4013
470/16
+C4015
470/16
+
R3005
0
R3006
Q4001
WM8740
1LRCIN
2DIN
3BCKIN
4MODE8X
5SCLK
6DIFFHW
7DGND
8DVDD
9AVDDR
10 AGNDR
11 VMIDR
12 VOUTRP
13 VOUTRN
14 AGND 15
AVDD
16
VOUTLN
17
VOUTLP
18
VMIDL
19
AGNDL
20
AVDDL
21
ZERO
22
RSTB
23
CSBIWO
24
MODE
25
MUTEB
26
MD/DM0
27
MC/DM1
28
ML/I2S
Q8006
NE5532AP
7
6
5
Q9006A
78M56
3O
2G
1
I
R8008
100
D8004
R8020 0
R8062
10K
R8013
0
C4005
47/50
+
C4023
100/50
+
C4030
334
R8051 100
Q4013
2SA1162-Y
Q4011
2SA1162-Y
Q4010
2SA1162-Y
C4024
104J
C4022
100/50
+
C4018
182
R1074
R1075
NC
P1004B CN12
Val
1
2
3
4
5
6
7
8
9
10
11
12
R8001
47K
R1019
10K
C2022
223
R2074
0
C2024
104Z
R1056
1k
R8003
220
C8020
33P
C8021
33P
R4038
R4040
4.7K
C4014
470/16
+
R4019
22(1/2W)
C8006
104Z
C8001
104Z
R1047
0
R1001
NM
C1018
R2059
0
R2042
22
C2062
NC
R2065
R2057
0
R2061
0
Q4005
NE5532AP
2
3
4
1
8
R4033
1.5K
C4007
102
C8017
103
R7005
100
R7002
100
R7003
100
R7004
100
R7001
100
R7009
100
R7006
100
R3003
100
P3001
COAXIAL
3
R2075
150
D9003
RL1N4003
C9023
470/16
+
R9010
10K
R9020
10K
R9023
1K(1W)
R9021
10K
R9017
10K
R9024
NC
Q8006
NE5532AP
8
1
4
3
2
R8026
100
R8065
NC
Q9006B
S-812C56AUA-C3E-T2
3O
1G
2
I
D8005
D9002
D5SBA20
1
3
4
2
D9007
RL1N4003
R1014
0
D9009
R9007
1k
Q9003
78M05
3O
2G
1
I
P7001
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P1003
for_SL_SP_Motor
1
2
3
4
5
6
P3002B
1
2
3
R2063
33
R2064
33
Q2006
2SA1162
C2065
104
C2066
100/16
+
R2037
10K
R2021
0
R3002
150
L3003
BLM21B222SPT
R8021 0
Q2002
BA5947FP
15 CH4OUTR
16 CH4OUTF
17 CH3OUTF
18 CH3OUTR
19 POWVCC
20 MUTE
21 GND
30 fin
22 CH3RIN
23 CH3FIN
24 CH4IN
25 CH4CAPA
26 OUTVREF
27 OPOUT
28 PREVCC 1
OPIN-
2
OPIN+
3
SW
4
CH1FIN
5
CH1RIN
6
CH2FIN
7
CH2RIN
29
fin
8
GND
9
VREFIN
10
POWVCC
11
CH2OUTR
12
CH2OUTF
13
CH1OUTR
14
CH1OUTF
P1005B
4
3
2
1
C4003
47/50
+
C4031
100/50
+
Q9004
78M08
3O
2G
1
I
R8009 0
P9004
ACINLET
2 1
R8064
0
P1001
for_Loading_Motor
5
4
3
2
1
C2055
22/6.3
+
R1073
C8007
104Z
C4004
470/16
+
C2068
223
X8001
12.5MHz
C4032
474
J1501
R4036
J1502
J1503
Q4004
NE5532AP
3
2
1
R4042 C4020
100/50
+
C4021
100/50
+
J1504
R9022
0.22(1W)
R9009
0
J1505
D7002
RL1N4003
J1507
J1506
C7003
330/16
+
C9024
2200/25
+
C4002
474
R1040 0
R1045 0
R1041 0
R1042 0
R1044 0
R8019 0
R8018 0
R7008
0
R7007
0
R8023 0
R8022 0
J1508
C7004
330/16
+
Q9002
UPC29M33HF
3O
2G
1
I
Q7001
78M05
1I3
O
2
G
Q9001
78M05
3O
2G
1
I
P4001 PINJACK Val
4
2
1
3
7
5
6
C2030
1000/16
+
Q2007
UPC2906HF
3O
2G
1
I
P9011BP9011A
C9019
C2064
+
C2069
330/16
+
C2041
104K
C2040 103K
C2047
104K
C2045
104K
C2049
104K
C2053
474K
C2051
152K
P3002A
3
2
1
C2048
NC
D2001
Q8005
61 EXILIN
62 POFF
63 SYSIN
64 CDSVRE
65 INTK0
66 EXIRIN
67 VSS0
68 VDD1
69 X2
70 X1
71 TEST/VPP
72 NC
73 GND
74 VDD0
75 AVDD
76 MODEL
77 GPANI1
78 K0
79 GPANI3
80 GPANI4
1GPANI5
2MODEL1
3GPANI7
4AVSS
5ACLKADJ
6NC
7AVREF1
8GPANI
9NC
10 GPANI
11 CDSVSO
12 CDSVSI
13 CDSVCK
14 EXCLK
15 SUBRST
16 SUBSO
17 SUBSI
18 SUBCL
19 SUBREQ
20 NC
21
CDSVRST
22
CDSVAK
23
CDSVRQ
24
NC
25
NC
26
NC
27
CDIC_SEL
28
NC
29
NC
30
NC
31
NC
32
NC
33
VSS1
34
STBYLED
35
NC
36
DACRST
37
NC
38
DACLAC
39
DACSDO
40
DACCLK
41
NC
42
NC
43
NC
44
NC
45
NC
46
NC
47
NC
48
NC
49
SYSOUT
50
EEPROMCS
51
EEEPROMCLK
52
EEPROMDI
53
EEPROMDO
54
ACLKSTP1
55
ACLKSTP2
56
ACLKSTP3
57
ACLKSTP4
58
ACLKSTP5
59
P-ON
60
RST
Q8005
MPD78F4225GC
61 EXILIN
62 POFF
63 SYSIN
64 CDSVRE
65 INTK0
66 EXIRIN
67 VSS0
68 VDD1
69 X2
70 X1
71 TEST/VPP
72 NC
73 GND
74 VDD0
75 AVDD
76 MODEL
77 GPANI1
78 K0
79 GPANI3
80 GPANI4
1GPANI5
2MODEL1
3GPANI7
4AVSS
5ACLKADJ
6NC
7AVREF1
8GPANI
9NC
10 GPANI
11 CDSVSO
12 CDSVSI
13 CDSVCK
14 EXCLK
15 SUBRST
16 SUBSO
17 SUBSI
18 SUBCL
19 SUBREQ
20 NC
21
CDSVRST
22
CDSVAK
23
CDSVRQ
24
NC
25
NC
26
NC
27
CDIC_SEL
28
NC
29
NC
30
NC
31
NC
32
NC
33
VSS1
34
STBYLED
35
NC
36
DACRST
37
NC
38
DACLAC
39
DACSDO
40
DACCLK
41
NC
42
NC
43
NC
44
NC
45
NC
46
NC
47
NC
48
NC
49
SYSOUT
50
EEPROMCS
51
EEEPROMCLK
52
EEPROMDI
53
EEPROMDO
54
ACLKSTP1
55
ACLKSTP2
56
ACLKSTP3
57
ACLKSTP4
58
ACLKSTP5
59
P-ON
60
RST
R8016
2.7K
R8066
10K
L2005
2.2u
L2003
2.2u
L2002
2.2u
L2004
2.2u
L1001
2.2u
L2001
2.2u
D9008
RL1N4003
Q4012B
NE5532AP
5
6
7
4
R4059
10K
R4063
10K
R4064
10K
R4060
10K
R4062
10K
R4061
10K Q4012A
NE5532AP
2
3
8
1
Q1001
MPD78F4225GC
61 CDSVGPI
62 CDSCORI
63 CDSVRQ
64 CDIREQ
65 CDACK
66 NC
67 VSS0
68 VDD1
69 X2
70 X1
71 TEST/VPP
72 NC
73 GND
74 VDD0
75 AVDD
76 GPANI0
77 GPANI1
78 GPANI2
79 GPANI3
80 GPANI4
1GPANI5
2GPANI6
3GPANI7
4AVSS
5GPANO0
6GPANO1
7AVREF1
8CDDATA2I
9CDDATA2O
10 CDCLOK2
11 CDSENS
12 CDDATA
13 CDCLOK
14 CDSVAK
15 CDSVRE/FLASHHS
16 CDSVSI/FLASHI
17 CDSVSO/FLASHO
18 CDSVCK/FLASHCK
19 CDSVGPO
20 CDXLT
21
CDFOK
22
CDRESET
23
CDREQ
24
CDPOWER
25
CDLAT2
26
CDEMPHASIS
27
CDDACRST
28
CDDACCS
29
CDDACCLK
30
CDDACSO
31
CDDACMUT
32
CDANAMUT
33
VSS1
34
CDOPEN
35
CDCLOSE
36
CDOPENSW
37
CDCLOSESW
38
CD4SPD
39
CD2SPD
40
CDRW
41
NC
42
NC
43
NC
44
NC
45
NC
46
NC
47
NC
48
NC
49
NC
50
NC
51
VDDVOLTAGE
52
GPIO0
53
GPIO1
54
GPIO2
55
GPIO3
56
GPIO4
57
GPIO5
58
GPIO6
59
GPIO7
60
CDSVRST
5
ATTENTION
VA
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
AGAINST FIRE HAZARD, REPLACE
VA
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL)
ELECTROLYTIC CAPACITORS ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030 3pF 330 33pF 331 330pF 333 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
NOTE
( )
6
6
6
2.5
2.5
3.3
3.3
2.5
3.3
3.3
8
-13
-5
4.7
5
5
8.0
5.0
3.3
6
U01 : MAIN CIRCUIT PC BOARD NAAR-8645
U02 : CONNECTOR
PC BOARD NAETC-8736
DX-7555
SCHEMATIC DIAGRAMS-1
DX-7555
A
1
2
3
4
5
BCDEFGH
DACLRCK
DACDATA
DACBCK
CDSCORI
VDD_CPU
VDD_CPU
CDSVSO
CDSVCK
CDSVRE
FLASHHS
FLASHCK
FLASHO
FLASHRST
FLASHI
VDSPD3.3V
CDDATA2
IREQ
C2PO
MNT2
MNT1
MNT0
FLASHVPI
VDD_CPU
CDOPENSW
CDCLOSESW
RFAC
VC
VDDC1.8V/2.5V
VDSPD3.3V
DOUT
ACM_H
ACM_L
DIS_COM+5V
CDSVRST
VDDC1.8V/2.5V
HP_-B
VDSPD3.3V
+B_R
+B
+B_L
D+3.3V
ACLOCKADJ
ACLOCKADJ
ACK_1
CDFOK
CDSCORI
ACK1
CDRESET
CDXLAT1
CDCLOK2
CDCLOCK_1
CDDATA_1
CDDATA2
CDOPEN
CDCLOSE
CDCLOSESW
CDOPENSW
CDSVRQ
CDSENS_1
CDDATA_1
IREQ_1
CDSVRQ
CDSVCK
DAC_SDO
DAC_RST
CDFOK_1
CDCLOSESW
CDOPENSW
CDCLOSE
CDOPEN
CDXLT_1
EXCLK
EXCLK
CDANAMUT
CDSVRQ
EXCLK
SO_1
SI_1
CL_1
REQ_1
ACLOCKADJ_1
SYS_+5V
CDRESET
REQ
SYS_GND
CDSVRQ
CDSVAK
CDSVRST
BACK_UP_EV5V
K0_1
REMO_IN_1
INT_K0_1
test
CDSVAK
CDSVRE
CDSVRST
RST
RI_OUT
RST
RI
HP_MUTE
HP_OUTR
MUTE_-B
AMUTE
MUTE_R
HP_MUTE
VSW_CPU
EV_GND
EV+5V
BACK_UP_EV5V
STBY_LED
REMO_IN_1
P-SUPPLY
MUTE_L
DIS_COM+5V
FL_AC_L
FL_AC_H
FL_AC_H
FL_AC_L
DIS_COM+5V
SRDR
TFDR
TRDR
FFDR
FRDR
SSTOP
SP-
SP+
SL+
SL-
VDDM
CDFOK
LD
E
F
A
B
C
D
SSTOP
PD
VCONT_MPU
VD+3.3V
+3.3V
DSP_+8VVSW8V
LD-
LD+
AVD1_+3.3V
XTAI
CDSENS
ACK
VC
-B_R
test
REQ_1
SO_1
SI_1
CL_1
OP_+8V
K0_1
ACK_1
BACK_UP_EV5V
P-ON
EV
EV_GND
VC
VDDPIC
SUB_RST
SUB_CL
SUB_SI
SUB_SO
EV_GND
SUB_REQ
REMO_IN
LED
K0
INT_K0
-VDISP
-VDISP_GND
FLAC1
FLAC2
VDDPIC
CDSVSI
CDXLAT_2
CDXLAT_1
SFDR
-B
-Vdisp_C
STBY_LED
DAC_LAC
DAC_CLK
CDSVRST_1
CDSVSI
CDSVCK
CDSVSI
CDSVSO
AC_-VDISP
AC_-VDISP
PDSENS
PDSENS
B
D
F
LD
PD
E
A
C
CDRESET
TFDR
TRDR
FRDR
FFDR
SL+
SL-
SP-
SP+
CLK2V
DAC_SCLK
DIS_COM+5V
EV+5V
CLK3.3V
MUTE_+B
REQ
CDRESET
OP_+8V
OP_+8V
OP_+8V_1
MUTE_+B_1
MUTE_+B
A+5V
VDSPD3.3V
MECHA_+B
MECHA_+B
SUBRST_1
SUBRST_1
TR+
TR-
FO+
FO-
FLASH_VPI
GNDD
GNDD
GND_CPU
GND_CPU
GNDD
GND_CPU
DSP_GND
DIS_GND
GNDD
MUTEGND
GND_CPU
MUTEGND
SUB_GND
-VDISP_GND_1
DIS_GND
GNDD
LD_GND
GNDD
GNDD
GNDM
DGND
DSP_GND
DIS_GND
GNDD
GND
GND
GNDM
GND_CPU
GND_CPU
P_GND
EV_GND_1
EV_GND_1
GNDM
DIS_GND
-VDISP_GND_1
MUTE_GND
GNDM
APGND
DGND
APGND
MUTE_GND_1
-VDISP_GND_1
GNDM
INT_K0_1
CDCLOCK_1
CDSVRE
CDSVSO
MUTE_GND_2
MUTE_GND_2
MUTE_GND_3
+5V
GND_D
DOUT_1
P-ON
K0_1
DAC_LAC
DAC_RST
DAC_SDO
DAC_CLK
RI_IN
P-OFF_1
P-OFF
P-OFF
-B_HP
+B_HP
AOUTL
AOUTR
HP_+B
A_GND
HP_OUTL
HP_-B
P_GND
CDCLOK_2
CDDATA_2
JL0002
JL0001
JL0004
JL0003
TRACKING
LD
VR
FO-
E
D
A
B
C
F
2.5V
5V VC
+5V
LD-G
PD
FOCUS
TR-
TR-
FO+
INSW
LD+
LD-
DGND
OUTSW
M
pick short terminal
SSTOP
3.3V
SL-
SL+
SP-
SP+
M
M
SERVO_+5V
Back up circuit
RI
DIGITAL OUT
no saving mode
<UJJ> Only
0R3005 NC
C3014 104 NC
UJJ ELSE
U3002 NC
NCR3006 0
CXD3014ARCXD3014R
R8057
R8060
0 ohm
0 ohm
NC
NC
C2035 NM
R2046
15K
C2034 102
C2033 NM
C2005 104Z
TP2003
MIRR
TP2004
DFCT
TP2001
COUT
TP2005
LOCK
5
R1038 100
C1019
P2004
1
CPUGND
2
CDSVSO
3
CDSVSI
4
CDSVCK
5
RST
6
EV5V
7
Vpp/test
8
NC
P2001 Error_Rate
1
2
3
4
5
6
C1016
R1017
1K
R1018
10K
R1020
C1014
C1013
R1008
10K
R1007
10K
1.5 to 1.6
TP2006
R2056
3.3K
R2051
10K
R2052
470K
C2046
332
R2060
15K
3.3
R2062
470K
C2061
101
R2036
0
C2011
104Z
C2016
104Z
R2014
22 R2015
22
C2028
104Z
R2028
10K
R2026
0
P7002
1
2
3
4
5
6
7
8
C9021
470/16
+
C4011
332
C8009 104Z
R8047
100
R1067 1K
R1070 1K
R1064 1K
D1001
1SS355
R1049
390
C8008
104Z
TP1001 CDRW
C9025
104J
5
R4066
560K
R2048 0
R2049 0
R2050 0
R2044
15K
R2043 0
R2045 0
R2041 0
R2040 0
3.3
R2019
0
P001B
1
2
3
4
5
6
C3009
C3010
C3008
C3001
224
C3013
104
C3012
330/16
+
Q8003
RN1407
Q3001
74HCU04AF
7GND
6
5
4
3
2
114
VCC
13
12
11
10
9
8
Q1002
TC7WT241FU
1G
2A1
3Y2
4GND 5
A2
6
Y1
7
G
8
VCC
Q1003
TC7WT241FU
1G
2A1
3Y2
4GND 5
A2
6
Y1
7
G
8
VCC
Q1004
TC7WT241FU
1G
2A1
3Y2
4GND 5
A2
6
Y1
7
G
8
VCC
Q8004
S-80145CLMC
3NC
2VSS
1DS 5
VCC
4
OUT
Q8002 BR93L56F-WE2
5DI
6DO
7GND
8NC 1
NC
2
Vcc
3
CS
4
SK
Q1005
TC7WZU04FU
5
6
7
8VD 1
2
3
4
GND
Q2001
BD7931F
1VCC
2M+
3M-
4POWGND 5
PREGND
6
CONT
7
REV_IN
8
FWD_IN
Q2003
CXD3014R
31 MIRR
32 DFCT
33 FOK
34 DVSS4
35 DVDD5
36 DVSS5
37 LOCK
38 MDP
39 SSTP
40 IOVSS4
41 SFDR
42 SRDR
43 TFDR
44 TRDR
45 FFDR
46 FRDR
47 IOVDD1
48 AVD1
49 AVS1
50 E
51 F
52 TEI
53 TEO
54 FEI
55 FEO
56 VC
57 A
58 B
59 C
60 D
61 AVD2
62 RFDCO
63 PDSENS
64 AC_SUM
65 EQ_IN
66 LD
67 PD
68 RFC
69 AVS2
70 RFACO
71 RFACI
72 AVD3
73 BIAS
74 ASYI
75 ASYO
76 VPCO
77 VCTL
78 AVS3
79 CLTV
80 FILO
81 FILI
82 PCO
83 SRAMVSS1
84 SRAMVDD1
85 SRAMSTB
86 DVDD1
87 DVSS1
88 TEST1
89 DATA
90 CLOK2
91
VSS2
92
VDD2
93
TEST2
94
TEST3
95
TEST4
96
TEST5
97
TEST6
98
DVSS2
99
DVDD2
100
IOVDD2
101
DOUT
102
TEST
103
TEST
104
IOVSS2
105
PLLAVD
106
PLLAVS
107
XVSS
108
XTAO
109
XTAI
110
XVDD
111
AVD4
112
AOUT1
113
VREFL
114
AVS4
115
AVSS
116
VREFR
117
AOUT2
118
AVD5
119
IOVDD3
120
IOVSS3
1
LRCK
2
LRCKI
3
PCMD
4
PCMDI
5
BCK
6
BCKI
7
XTACN
8
XRST
9
DVSS3
10
IREQ
11
CLOK
12
DATA2
13
XLAT2
14
REQ
15
ACK
16
XLAT
17
DVDD3
18
SRAMVSS3
19
SRAMVDD3
20
SENS
21
WFCK
22
XUGF
23
XPCK
24
GFS
25
C2PO
26
SCOR
27
DVDD4
28
COUT
29
SRAMVSS4
30
SRAMVDD4
Q4005
NE5532AP
6
5
7
Q4002
NE5532AP
3
2
1
P2005
8
NC 7
Vpp/test 6
EV5V 5
RST 4
CDSVCK 3
CDSVSI 2
CDSVSO 1
CPUGND
Q7003
2SD1644
Q7002
2SD1644
Q9005
UPC29M33HF
2G
1I3
O
Q2005
MPD120N25T1B
1O3
I
2
G
D9005
RL1N4003
D9006
RL1N4003
D9004
RL1N4003
C8002
2.2/50
+
D8002
D9001
UDZS4.7B
D8008
D8003
UDZS5.6B
Q8001
RN2403
D8001
D7001
RL1N4003
C7002
104J
L3001
BLM21B222SPT
L3002
BLM21B222SPT
R8011
470
L8001
BLM21B222SPT
T3001
NSRF-2046
U3001
TOTX141
1
GND
2
V
3
IN
P3101
RI_JACK
3
2
1
4
P9033 From_S_PT
1
2
3
4
5
P9001
For_M_PT
1
2
3
4
5
6
7
P2002
for_Jitter_Measure
2
1
P703
For_Freq_Measure
2
1
C8011
0.1F
+
D8007
D8006
R2020
22K
C2014
472
C2004
104Z
R2007
5.6K
C2043
104Z
C2007
104Z
C9007
C9009
C2006
104
C2054
C4027
104J
C4025
104J
C4026
104J
Q4008
2SD655
Q4006
2SD655
Q4009
2SD655
Q4007
2SD655
3 2
C1008
104Z
C8013
104Z
C8003
104
C2029
104Z
C2067
C3011
104
C9016
C1010
104Z
C9004
C9022
104Z
C1009
104Z
C2008
104Z
C2013
104
C2025
104Z
R2053
1K
C2058
104
C2052
100/16
+
C8012
104Z
C3006
223
C3003
223
C2001
473
C8004
473
C8005
473
C9011
474
C9010
474
C8014
33P
C8016
33P
C8015
33P
C8019
33P
C8018
33P
C8022
33P
C2032 681
C9014
22000/50
+
C4006
102
Q4003
NE5532AP
6
5
7
C4009
102
C4028
102
C4008
102
C4029
102
C4019
182
C4010
332
C2039
100/16
+
C2038
104Z
C2002 104Z
C2003 470/16
+
C2063
100/16
+
C2037
100/16
+
R2047 0
C2036
100/16
+
C1011
100/16
+
C9001
C2050
100/16
+
C9018
1000/16
+
C3007
330/16
+
C9003
330/16
+
C9017
330/16
+
C9020
470/16
+
C7001
470/16
+
C8010
2.2/50
+
C8024
2.2/50
+
C3002
22/50
+
C2010
22/50
+
C2015
22/50
+
C2012
47/50
+
C2017
47/50
+
R1004
NC
R1003
10K
R1002
10K
R1009
100
R1010
100
R1011
100
R1006
10K
R1005 10K
C1015
TP1002 CD2SPD
TP1003 CD4SPD
R1012
0
R1016
0
R1013
0
R1015
10K
R1037 0
R1033 0
R1032 0
R1029 0
R1027 0
R1025 0
R1021
R1026 0
R1028 0
R1024 0
R1022 0
R1023
R1030
10K
R1031
R1035
10K
R1034
10K
C1017
C1007
104Z
R1036
R1046
0
R1039 100
R1043 0
R1048
560
R1053
1K
R1055
1K
R1052
560
R1057
0
R1051
47
R1050
560
R1058
0
R1061 560
R1060 560
R1059 560
R1054
1K
R1068
R1065 R1066 R1069
R1062
0R1063
0
C1012
104Z
R1071
0
R1072
R2012 0
R2010 0
R2009 0
TP2002 WFCK
R2011 0
R2006
47K
R2001
560
R2008
15K
R2005
R2002
1K
R2013
22
R2018
0
R2016 0
R2027 0
R2030 0
R2023 0
R2025 0
R2034 0
R2032 0
R2022
R2035
R2031
0
R2039
0
R2055
100K
R2058
1M
R2054
4.7K
C2059
104Z
C2044
R2066 0
R2067 0
R2068 0
R2069 0
R2072
0
R3001
150
C3005
223
C3004
223
R3004
R4002
R4006
1.2K
R4004
1.2K
R4001
R4003
1.2K
R4005
1.2K
R4007
R4008
R4010
2.4K
R4012
2.4K
R4011
2.4K
R4009
2.4K
R4013
10K
R4015
10K
R4014
10K
R4016
10K
C4017
C4016
R4020
22(1/2W)
R4017
22(1/2W)
R4018
22(1/2W)
Q4003
NE5532AP
2
3
4
1
8
R4021
1.5K
R4023
22K
Q4002
NE5532AP
5
6
8
7
4
R4022
1.5K
R4024
22K
R4025
22K
R4026
22K
R4028
22K
R4027
22K
R4029
22K
R4031
1.5K
R4030
22K
R4032
1.5K
Q4004
NE5532AP
5
6
8
7
4
R4034
1.5K
R4035
R4037
R4039
4.7K
R4041
R4043
470K
R4044
470K R4045
10K
R4046
10K
R4047
220
R4051
220
R4052
220
R4048
220
R4050
10K
R4049
10K
R4055
560K
R4056
560K
R4054
220K
R4053
220K
R4057
0
R4065
0
R4058
0
R4067
220K
R4068
0
R7011
10k
R7010
10k
R8005 0
R8006 0
R8007 0
R8002
100
R8010
10K
R8004
220K
R8024 0
R8025 0
R8053
10K
R8052
10K
R8015
0
R8014
0
C8023
33P
R8017
0
R8012
10K
R8028
560
R8029
560
R8030
560
R8027
560
R8032
1K
R8031
1K
R8034
1K
R8036 10K
R8049
R8048
10K
R8046 1K
R8059
47K
R8057
R8050
1K
R8055
R8056
0
R8058
R8054
10K
R8061
R8060
R9008
0
R9006
33(1W)
R9001
22(1/2W)
R9003
22(1/2W)
C9013
22000/50
+
R9018
0
C3014
U3002
1
GND
2
V
3
IN
C4012
470/16
+
C4013
470/16
+C4015
470/16
+
R3005
0
R3006
Q4001
WM8740
1LRCIN
2DIN
3BCKIN
4MODE8X
5SCLK
6DIFFHW
7DGND
8DVDD
9AVDDR
10 AGNDR
11 VMIDR
12 VOUTRP
13 VOUTRN
14 AGND 15
AVDD
16
VOUTLN
17
VOUTLP
18
VMIDL
19
AGNDL
20
AVDDL
21
ZERO
22
RSTB
23
CSBIWO
24
MODE
25
MUTEB
26
MD/DM0
27
MC/DM1
28
ML/I2S
Q8006
NE5532AP
7
6
5
Q9006A
78M56
3O
2G
1
I
R8008
100
D8004
R8020 0
R8062
10K
R8013
0
C4005
47/50
+
C4023
100/50
+
C4030
334
R8051 100
Q4013
2SA1162-Y
Q4011
2SA1162-Y
Q4010
2SA1162-Y
C4024
104J
C4022
100/50
+
C4018
182
R1074
R1075
NC
P1004B CN12
Val
1
2
3
4
5
6
7
8
9
10
11
12
R8001
47K
R1019
10K
C2022
223
R2074
0
C2024
104Z
R1056
1k
R8003
220
C8020
33P
C8021
33P
R4038
R4040
4.7K
C4014
470/16
+
R4019
22(1/2W)
C8006
104Z
C8001
104Z
R1047
0
R1001
NM
C1018
R2059
0
R2042
22
C2062
NC
R2065
R2057
0
R2061
0
Q4005
NE5532AP
2
3
4
1
8
R4033
1.5K
C4007
102
C8017
103
R7005
100
R7002
100
R7003
100
R7004
100
R7001
100
R7009
100
R7006
100
R3003
100
P3001
COAXIAL
3
R2075
150
D9003
RL1N4003
C9023
470/16
+
R9010
10K
R9020
10K
R9023
1K(1W)
R9021
10K
R9017
10K
R9024
NC
Q8006
NE5532AP
8
1
4
3
2
R8026
100
R8065
NC
Q9006B
S-812C56AUA-C3E-T2
3O
1G
2
I
D8005
D9002
D5SBA20
1
3
4
2
D9007
RL1N4003
R1014
0
D9009
R9007
1k
Q9003
78M05
3O
2G
1
I
P7001
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P1003
for_SL_SP_Motor
1
2
3
4
5
6
P3002B
1
2
3
R2063
33
R2064
33
Q2006
2SA1162
C2065
104
C2066
100/16
+
R2037
10K
R2021
0
R3002
150
L3003
BLM21B222SPT
R8021 0
Q2002
BA5947FP
15 CH4OUTR
16 CH4OUTF
17 CH3OUTF
18 CH3OUTR
19 POWVCC
20 MUTE
21 GND
30 fin
22 CH3RIN
23 CH3FIN
24 CH4IN
25 CH4CAPA
26 OUTVREF
27 OPOUT
28 PREVCC 1
OPIN-
2
OPIN+
3
SW
4
CH1FIN
5
CH1RIN
6
CH2FIN
7
CH2RIN
29
fin
8
GND
9
VREFIN
10
POWVCC
11
CH2OUTR
12
CH2OUTF
13
CH1OUTR
14
CH1OUTF
P1005B
4
3
2
1
C4003
47/50
+
C4031
100/50
+
Q9004
78M08
3O
2G
1
I
R8009 0
P9004
ACINLET
2 1
R8064
0
P1001
for_Loading_Motor
5
4
3
2
1
C2055
22/6.3
+
R1073
C8007
104Z
C4004
470/16
+
C2068
223
X8001
12.5MHz
C4032
474
J1501
R4036
J1502
J1503
Q4004
NE5532AP
3
2
1
R4042 C4020
100/50
+
C4021
100/50
+
J1504
R9022
0.22(1W)
R9009
0
J1505
D7002
RL1N4003
J1507
J1506
C7003
330/16
+
C9024
2200/25
+
C4002
474
R1040 0
R1045 0
R1041 0
R1042 0
R1044 0
R8019 0
R8018 0
R7008
0
R7007
0
R8023 0
R8022 0
J1508
C7004
330/16
+
Q9002
UPC29M33HF
3O
2G
1
I
Q7001
78M05
1I3
O
2
G
Q9001
78M05
3O
2G
1
I
P4001 PINJACK Val
4
2
1
3
7
5
6
C2030
1000/16
+
Q2007
UPC2906HF
3O
2G
1
I
P9011BP9011A
C9019
C2064
+
C2069
330/16
+
C2041
104K
C2040 103K
C2047
104K
C2045
104K
C2049
104K
C2053
474K
C2051
152K
P3002A
3
2
1
C2048
NC
D2001
Q8005
61 EXILIN
62 POFF
63 SYSIN
64 CDSVRE
65 INTK0
66 EXIRIN
67 VSS0
68 VDD1
69 X2
70 X1
71 TEST/VPP
72 NC
73 GND
74 VDD0
75 AVDD
76 MODEL
77 GPANI1
78 K0
79 GPANI3
80 GPANI4
1GPANI5
2MODEL1
3GPANI7
4AVSS
5ACLKADJ
6NC
7AVREF1
8GPANI
9NC
10 GPANI
11 CDSVSO
12 CDSVSI
13 CDSVCK
14 EXCLK
15 SUBRST
16 SUBSO
17 SUBSI
18 SUBCL
19 SUBREQ
20 NC
21
CDSVRST
22
CDSVAK
23
CDSVRQ
24
NC
25
NC
26
NC
27
CDIC_SEL
28
NC
29
NC
30
NC
31
NC
32
NC
33
VSS1
34
STBYLED
35
NC
36
DACRST
37
NC
38
DACLAC
39
DACSDO
40
DACCLK
41
NC
42
NC
43
NC
44
NC
45
NC
46
NC
47
NC
48
NC
49
SYSOUT
50
EEPROMCS
51
EEEPROMCLK
52
EEPROMDI
53
EEPROMDO
54
ACLKSTP1
55
ACLKSTP2
56
ACLKSTP3
57
ACLKSTP4
58
ACLKSTP5
59
P-ON
60
RST
Q8005
MPD78F4225GC
61 EXILIN
62 POFF
63 SYSIN
64 CDSVRE
65 INTK0
66 EXIRIN
67 VSS0
68 VDD1
69 X2
70 X1
71 TEST/VPP
72 NC
73 GND
74 VDD0
75 AVDD
76 MODEL
77 GPANI1
78 K0
79 GPANI3
80 GPANI4
1GPANI5
2MODEL1
3GPANI7
4AVSS
5ACLKADJ
6NC
7AVREF1
8GPANI
9NC
10 GPANI
11 CDSVSO
12 CDSVSI
13 CDSVCK
14 EXCLK
15 SUBRST
16 SUBSO
17 SUBSI
18 SUBCL
19 SUBREQ
20 NC
21
CDSVRST
22
CDSVAK
23
CDSVRQ
24
NC
25
NC
26
NC
27
CDIC_SEL
28
NC
29
NC
30
NC
31
NC
32
NC
33
VSS1
34
STBYLED
35
NC
36
DACRST
37
NC
38
DACLAC
39
DACSDO
40
DACCLK
41
NC
42
NC
43
NC
44
NC
45
NC
46
NC
47
NC
48
NC
49
SYSOUT
50
EEPROMCS
51
EEEPROMCLK
52
EEPROMDI
53
EEPROMDO
54
ACLKSTP1
55
ACLKSTP2
56
ACLKSTP3
57
ACLKSTP4
58
ACLKSTP5
59
P-ON
60
RST
R8016
2.7K
R8066
10K
L2005
2.2u
L2003
2.2u
L2002
2.2u
L2004
2.2u
L1001
2.2u
L2001
2.2u
D9008
RL1N4003
Q4012B
NE5532AP
5
6
7
4
R4059
10K
R4063
10K
R4064
10K
R4060
10K
R4062
10K
R4061
10K Q4012A
NE5532AP
2
3
8
1
Q1001
MPD78F4225GC
61 CDSVGPI
62 CDSCORI
63 CDSVRQ
64 CDIREQ
65 CDACK
66 NC
67 VSS0
68 VDD1
69 X2
70 X1
71 TEST/VPP
72 NC
73 GND
74 VDD0
75 AVDD
76 GPANI0
77 GPANI1
78 GPANI2
79 GPANI3
80 GPANI4
1GPANI5
2GPANI6
3GPANI7
4AVSS
5GPANO0
6GPANO1
7AVREF1
8CDDATA2I
9CDDATA2O
10 CDCLOK2
11 CDSENS
12 CDDATA
13 CDCLOK
14 CDSVAK
15 CDSVRE/FLASHHS
16 CDSVSI/FLASHI
17 CDSVSO/FLASHO
18 CDSVCK/FLASHCK
19 CDSVGPO
20 CDXLT
21
CDFOK
22
CDRESET
23
CDREQ
24
CDPOWER
25
CDLAT2
26
CDEMPHASIS
27
CDDACRST
28
CDDACCS
29
CDDACCLK
30
CDDACSO
31
CDDACMUT
32
CDANAMUT
33
VSS1
34
CDOPEN
35
CDCLOSE
36
CDOPENSW
37
CDCLOSESW
38
CD4SPD
39
CD2SPD
40
CDRW
41
NC
42
NC
43
NC
44
NC
45
NC
46
NC
47
NC
48
NC
49
NC
50
NC
51
VDDVOLTAGE
52
GPIO0
53
GPIO1
54
GPIO2
55
GPIO3
56
GPIO4
57
GPIO5
58
GPIO6
59
GPIO7
60
CDSVRST
5
ATTENTION
VA
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
AGAINST FIRE HAZARD, REPLACE
VA
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL)
ELECTROLYTIC CAPACITORS ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030 3pF 330 33pF 331 330pF 333 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
NOTE
( )
6
6
6
2.5
2.5
3.3
3.3
2.5
3.3
3.3
8
-13
-5
4.7
5
5
8.0
5.0
3.3
6
U01 : MAIN CIRCUIT PC BOARD NAAR-8645
U02 : CONNECTOR
PC BOARD NAETC-8736
DX-7555
SCHEMATIC DIAGRAMS-2
DX-7555
A
1
2
3
4
5
BCDEFGH
P901
AS-CEE
S8004
1
4
52
3
4
3
2
1
T.F.
T902
NPT1451A
10
11
12
13
14
15
16
8
9
R4103
20K
L4001
1
2
34
5
6
R9103
2.2(1W)
R9102
1.0(1W)
R9101
1.0(1W)
JL9001
P7002
Q81016-BT-289GK
F11 1
F12 2
F21 45
F22 44
G1 41
G10 32
G11 31
G12 30
G13 29
G2 40
G3 39
G4 38
G5 37
G6 36
G7 35
G8 34
G9 33
P1 19
P10 10
P11 9
P12 8
P13 7
P14 6
P15 5
P2 18
P3 17
P4 16
P5 15
P6 14
P7 13
P8 12
P9 11
S9001
Q4011
OPAMP
3
2
1
Q4011
OPAMP
58
6
4
7
Q9002
NC OUT
VDD
VSS
VSS2
P4001
JL9033
RL9001
R9202
0.47
R9203
0.47
L9001
NCH3564
1
23
4
T9001
NPT-1519GQ
1
4
5
6
8
9
P9013A
P9013C
P9003B
P9004C
P9022
P9011
P9013
C4121
102
C4111
C4109
104
C4103
102
C4104
102
C9114
104
C9113
104
C9111
474
C9110
104
C9106
104
C9108
474
C9104
224
C8506
NC
D9106
RL1N4003
D9108
RL1N4003
D9105
D9104
D9103
D9102
RL1N4003
D9101
D8506
NC
JL4001B
P8003B
JL4001A
P8003A
P8001
Q8501
2SD1664
Q8502
2SD1664
D9107
UDZS5.1B
D8502 UDZS5.6B
D8501
UDZS27B
Q8503
2SA950-Y
X8601 12.50MHZ
C4101
220/16
C4102
220/16
C4106
47/50
C4105
47/50
C9112
2.2/50
C9109
6800/16
C9105
47/50
C8601
100/6.3
C8507
NC
C8501
100/50
C8101
47/6.3
C8504
C8502
100/50V
C4108
102
C4107
102
C9107
472
C9103
472M
C9102
472M
C9101
472M
C8102
104
C9115
472M
C8503
273
C8806
104 C8805
220
C8804
220 C8803
220
C8702
220 C8701
220
C8602
104
U8001
GP1UM27XK0VF
C8401
104
C8402
104
C8103
104 Q8401
RN1404
Q4002
RN1441
Q4003
RN1441
Q9001
DTC123JS
D8401
SML-512UWT88
R4102
22
R4101
22
R8402
NC
R8401
1.8K
R8403
NC
R4113
390
R4112
390
R4111
220K
R4110
220K
R4107
4.7K
R4105
10K
R4109
10K
R4104
10K
R4106
4.7K
R4108 10K
R9206
18K
R9204
8.2K
R9205
27K
R9201
10
R8504
470
R8702
10K
R8701
10K
R8704
10K
R8706
10K
R8705
10K
R8703
10K
R8708 2.7K
R8709
2.7K
R8801
2.7K
R8800
2.7K
R8802
4.7K
R8803
4.7K
R8903 0
R8902
0
R8991
0
R8206
0
R8600
1M
R8508
100K
R8503
470
R8116
0R8117
47
R8111
390
R8112
470
R8201
390
R8101
390
R8102
470
R8502 10K
R8501
10K
R8506
220K
R8507
47K
R8505
4.7K
R8601
0
R8707
10K
R8606
47
R8605
47
R8603
47
R8604
47
R8602
47
S8002
S8003
S8001
S8202
S8201 S8102
S8103
S8101
Q8601
-VDISP60
10G
11G
12G
13G
14G
1G
2G
3G
4G
5G
6G
7G
8G
9G
AVDD 24
AVSS 18
DIGI_OFF_LED 28
DSC_IND_LED1 29
DSC_IND_LED2 30
DSC_IND_LED3 31
FIP13
FL_HSW 26
IC 5
INTP_0 15
I_P22 12
I_P23 11
K0 22
K1
21
K2 20
K3 19
P1
P1053
P1152
P1251
P1350
P1449
P15
48
P16
47
P17
46
P18
45
P1944
P2
P2043
P21
42
P22
41
P23
40
P24 39
P25 38
P26 37
P27 36
P28 35
P29 34
P3
P30 33
P31 32
P36
P4
71
70
69
68
67
80
79
78
77
76
75
74
73
72
66
64
63
62
65
61
P558
P657
P756
P855
P954
SO_3 13
SUBCL 7
SUBREEST 6
SUBREQ 10
SUBSI 8
SUBSO 9
TI 17
TRAYBRIGHT 16
TRAYLED2 27
TRAYLED_1 14
VDD1 1
VDD_0 25
VDD_259
VSS0 23
VSS1 2
X1 3
X2 4
FL_ON/OFF
JOG_B
JOG_A
KEY_0
KEY_1
FL_ON/OFF
SW-VP
KEY_2
P15
P14
P13
P12
P11
P10
P9 P15 SW-VP
P8 P14 LED_8
P7 P13 DSC_IND_LED3 SUBREQ SUBREQ
P6 P12 SUBREQ SUBSO SUBSO
P5 P11 SUBSO SUBSI SUBSI
P4 P10 SUBSI SUBCL SUBCL
P3 P9 SUBCL
P2 P8 SUBRSTIN SUBRSTIN SUBRSTIN
P1 P7
P6
P5 +B[SUB]
VP_ACH
13G F1_IN
12G F2
11G GND
10G KEY_0_EV_CHK
9G KEY_0_EV
8G
7G STABY_LED
6G +5EV
5G REMSENS
4G
3G
2G
1G
FL_ON/OFF
F1_IN
F1_OUT F1_OUT
F2 F2
KEY_0
JOG_A
JOG_B
+5EV
KEY_1
STABY_LED
GND
REMSENS
KEY_0_EV
KEY_0_EV_CHK
GND[SUB]
KEY_0_EV
RNF
ROUT
R-IN
HP-B HP+BOUT
HP-GND
HP+B
HP-BOUT HP-GND
HP-MUTE
HP-MUTE
HP-MUTEGND HP-MUTE GND
P_ON
HP-R
SUB_GND HP-GND
HP-L
L-IN
P_OFF
LOUT
LNF
RED
AS-JA
AS-UC-2
AS-CCC
NAETC-8653
NAETC-8652
NAETC-8651
STANBY_LED
NAPS-8648 NAPS-8646
NAPS-8647
NADIS-8650
PLAY
OP/CL
STANBY
PAUSE
STOP
FR
DISP
FF
ENTER
DOWN
UP
MAIN_MICON
J9103(R9104)
2.2(1/2W)
<MDC ONLY>
U06 : DISPLAY CIRCUIT PC BOARD NADIS-8650
U04 : POWER TRANSFORMER PC BOARD
NAPS-8647 U03 : POWER SUPPLY CIRCUIT PC BOARD
NAPS-8646
U09 : HEADPHONE AMP. PC BOARD
NAETC-8653
U08 : HEADPHONE JACK PC BOARD
NAETC-8652
U07 : STANDBY LED PC BOARD
NAETC-8651
U05 : POWER SWITCH PC BOARD
NAPS-8648
DX-7555
SCHEMATIC DIAGRAMS-2
DX-7555
A
1
2
3
4
5
BCDEFGH
P901
AS-CEE
S8004
1
4
52
3
4
3
2
1
T.F.
T902
NPT1451A
10
11
12
13
14
15
16
8
9
R4103
20K
L4001
1
2
34
5
6
R9103
2.2(1W)
R9102
1.0(1W)
R9101
1.0(1W)
JL9001
P7002
Q81016-BT-289GK
F11 1
F12 2
F21 45
F22 44
G1 41
G10 32
G11 31
G12 30
G13 29
G2 40
G3 39
G4 38
G5 37
G6 36
G7 35
G8 34
G9 33
P1 19
P10 10
P11 9
P12 8
P13 7
P14 6
P15 5
P2 18
P3 17
P4 16
P5 15
P6 14
P7 13
P8 12
P9 11
S9001
Q4011
OPAMP
3
2
1
Q4011
OPAMP
58
6
4
7
Q9002
NC OUT
VDD
VSS
VSS2
P4001
JL9033
RL9001
R9202
0.47
R9203
0.47
L9001
NCH3564
1
23
4
T9001
NPT-1519GQ
1
4
5
6
8
9
P9013A
P9013C
P9003B
P9004C
P9022
P9011
P9013
C4121
102
C4111
C4109
104
C4103
102
C4104
102
C9114
104
C9113
104
C9111
474
C9110
104
C9106
104
C9108
474
C9104
224
C8506
NC
D9106
RL1N4003
D9108
RL1N4003
D9105
D9104
D9103
D9102
RL1N4003
D9101
D8506
NC
JL4001B
P8003B
JL4001A
P8003A
P8001
Q8501
2SD1664
Q8502
2SD1664
D9107
UDZS5.1B
D8502 UDZS5.6B
D8501
UDZS27B
Q8503
2SA950-Y
X8601 12.50MHZ
C4101
220/16
C4102
220/16
C4106
47/50
C4105
47/50
C9112
2.2/50
C9109
6800/16
C9105
47/50
C8601
100/6.3
C8507
NC
C8501
100/50
C8101
47/6.3
C8504
C8502
100/50V
C4108
102
C4107
102
C9107
472
C9103
472M
C9102
472M
C9101
472M
C8102
104
C9115
472M
C8503
273
C8806
104 C8805
220
C8804
220 C8803
220
C8702
220 C8701
220
C8602
104
U8001
GP1UM27XK0VF
C8401
104
C8402
104
C8103
104 Q8401
RN1404
Q4002
RN1441
Q4003
RN1441
Q9001
DTC123JS
D8401
SML-512UWT88
R4102
22
R4101
22
R8402
NC
R8401
1.8K
R8403
NC
R4113
390
R4112
390
R4111
220K
R4110
220K
R4107
4.7K
R4105
10K
R4109
10K
R4104
10K
R4106
4.7K
R4108 10K
R9206
18K
R9204
8.2K
R9205
27K
R9201
10
R8504
470
R8702
10K
R8701
10K
R8704
10K
R8706
10K
R8705
10K
R8703
10K
R8708 2.7K
R8709
2.7K
R8801
2.7K
R8800
2.7K
R8802
4.7K
R8803
4.7K
R8903 0
R8902
0
R8991
0
R8206
0
R8600
1M
R8508
100K
R8503
470
R8116
0R8117
47
R8111
390
R8112
470
R8201
390
R8101
390
R8102
470
R8502 10K
R8501
10K
R8506
220K
R8507
47K
R8505
4.7K
R8601
0
R8707
10K
R8606
47
R8605
47
R8603
47
R8604
47
R8602
47
S8002
S8003
S8001
S8202
S8201 S8102
S8103
S8101
Q8601
-VDISP60
10G
11G
12G
13G
14G
1G
2G
3G
4G
5G
6G
7G
8G
9G
AVDD 24
AVSS 18
DIGI_OFF_LED 28
DSC_IND_LED1 29
DSC_IND_LED2 30
DSC_IND_LED3 31
FIP13
FL_HSW 26
IC 5
INTP_0 15
I_P22 12
I_P23 11
K0 22
K1
21
K2 20
K3 19
P1
P1053
P1152
P1251
P1350
P1449
P15
48
P16
47
P17
46
P18
45
P1944
P2
P2043
P21
42
P22
41
P23
40
P24 39
P25 38
P26 37
P27 36
P28 35
P29 34
P3
P30 33
P31 32
P36
P4
71
70
69
68
67
80
79
78
77
76
75
74
73
72
66
64
63
62
65
61
P558
P657
P756
P855
P954
SO_3 13
SUBCL 7
SUBREEST 6
SUBREQ 10
SUBSI 8
SUBSO 9
TI 17
TRAYBRIGHT 16
TRAYLED2 27
TRAYLED_1 14
VDD1 1
VDD_0 25
VDD_259
VSS0 23
VSS1 2
X1 3
X2 4
FL_ON/OFF
JOG_B
JOG_A
KEY_0
KEY_1
FL_ON/OFF
SW-VP
KEY_2
P15
P14
P13
P12
P11
P10
P9 P15 SW-VP
P8 P14 LED_8
P7 P13 DSC_IND_LED3 SUBREQ SUBREQ
P6 P12 SUBREQ SUBSO SUBSO
P5 P11 SUBSO SUBSI SUBSI
P4 P10 SUBSI SUBCL SUBCL
P3 P9 SUBCL
P2 P8 SUBRSTIN SUBRSTIN SUBRSTIN
P1 P7
P6
P5 +B[SUB]
VP_ACH
13G F1_IN
12G F2
11G GND
10G KEY_0_EV_CHK
9G KEY_0_EV
8G
7G STABY_LED
6G +5EV
5G REMSENS
4G
3G
2G
1G
FL_ON/OFF
F1_IN
F1_OUT F1_OUT
F2 F2
KEY_0
JOG_A
JOG_B
+5EV
KEY_1
STABY_LED
GND
REMSENS
KEY_0_EV
KEY_0_EV_CHK
GND[SUB]
KEY_0_EV
RNF
ROUT
R-IN
HP-B HP+BOUT
HP-GND
HP+B
HP-BOUT HP-GND
HP-MUTE
HP-MUTE
HP-MUTEGND HP-MUTE GND
P_ON
HP-R
SUB_GND HP-GND
HP-L
L-IN
P_OFF
LOUT
LNF
RED
AS-JA
AS-UC-2
AS-CCC
NAETC-8653
NAETC-8652
NAETC-8651
STANBY_LED
NAPS-8648 NAPS-8646
NAPS-8647
NADIS-8650
PLAY
OP/CL
STANBY
PAUSE
STOP
FR
DISP
FF
ENTER
DOWN
UP
MAIN_MICON
J9103(R9104)
2.2(1/2W)
<MDC ONLY>
U06 : DISPLAY CIRCUIT PC BOARD NADIS-8650
U04 : POWER TRANSFORMER PC BOARD
NAPS-8647 U03 : POWER SUPPLY CIRCUIT PC BOARD
NAPS-8646
U09 : HEADPHONE AMP. PC BOARD
NAETC-8653
U08 : HEADPHONE JACK PC BOARD
NAETC-8652
U07 : STANDBY LED PC BOARD
NAETC-8651
U05 : POWER SWITCH PC BOARD
NAPS-8648
DX-7555
SCHEMATIC DIAGRAMS-3
DX-7555
A
1
2
3
4
BCDE
VDD+3.0V
VDD+3.3V
VCONT_MPU
VD+3.3V
GNDD
GNDD
CLK3.3V
CLK2V
R006
Val
R007
Val
R009
Val
R010
Val
R011
Val
C004
105Z
C005
102J
C006
103K
C007
105Z
TP3
VDD+3.0V
TP1
CLK3.3V TP2
VDDA+3.3V
TP4
16.9344M
TP5
VCTRL
L001 10u
C001
105Z
R001
Val
C002
220/6.3R002
47
C003
10/16
R014
22K
R016 470
C009 VAL
C008 VAL
Q001
TC7WZU04FU
1
2
3
4GND 5
6
7
8
VD
Q002
NJM2373AF
1NC
2
3NC 4
5
X001
DSA535SB
1Vcont
2GND 3
Output
4
Vcc
R003
10KF
R004 12KF
R005 18KF
R013
2.2KF
R012
2.2KF
R008
Val
1
2
3
E001
TP7
CLK2V
TP6
GND
P001 Val
1
2
3
4
5
6
R015
470
U10 : SUPER PRECISION CLOCK PC BOARD NADG-8725
DX-7555
PRINTED CIRCUIT BOARDVIEWS-1
DX-7555
A
1
2
3
4
5
BCDEFGH
U01 MAIN CIRCUIT PC BOARD (NAAR-8645)
Component side
U02 CONNECTOR PC BOARD (NAETC-8736)
Component side
DX-7555
PRINTED CIRCUIT BOARDVIEWS-1
DX-7555
A
1
2
3
4
5
BCDEFGH
U01 MAIN CIRCUIT PC BOARD (NAAR-8645)
Component side
U02 CONNECTOR PC BOARD (NAETC-8736)
Component side
DX-7555
PRINTED CIRCUIT BOARDVIEWS-2
DX-7555
A
1
2
3
4
5
BCDEFGH
U01 MAIN CIRCUIT PC BOARD (NAAR-8645)
Soldering side
DX-7555
PRINTED CIRCUIT BOARDVIEWS-2
DX-7555
A
1
2
3
4
5
BCDEFGH
U01 MAIN CIRCUIT PC BOARD (NAAR-8645)
Soldering side
C8102
C8103
C8503
C8602
C8701
C8702
C8803
C8804
C8805
C8806
D8501
D8502
Q8501
Q8502
Q8601
Q8601
R8111
R8112
R8116
R8117
R8101
R8102
R8201
R8206
R8501
R8502
R8503
R8504
R8505
R8506
R8507
R8600
R8601
R8602
R8603
R8604
R8605
R8606
R8607
R8701
R8702
R8703 R8704
R8705 R8706
R8707
R8708
R8709
R8800
R8801
R8903
R8902
R8901
R8906
R8904
R8905
R8508
R8802
R8803
R8907
1
61
21
41
C8604
C8101
C8501
C8501
C8502
C8502
C8504
C8506
C8507
C8601
D8506
P8003A
P8001
Q8101
Q8101
Q8503
S8001
S8002
S8003
S8004
S8004
S8101
S8102S8103
S8201
S8202
U8001
U8001
X8601
J1002
J1006
J1003
J1004
J1005
J1038
J1007
J1008
J1009
J1010
J1011
J1012
J1013
J1015
J1040 J1016
J1017
J1018
J1019
J1020
J1021
J1022
J1023
J1024
J1042
J1028
J1027
J1029
J1030
J1031
J1032
J1034
J1035
J1036
J1014
J1037
PLAY STOP PAUSE
OP/CL
FF FR DISP
STANDBY
NCDIS-8650
25138650D
2
J1001
J1039
J1025
J1026
J1041
Q8101A
Q8101A
Q8101B
Q8101B
U8001AU8001A
2
2
2
2
22
22
27
20
7
30
22
25
25
30
20
20
20
20
30
30
15
15
7
27
27
7
15
25
7
20
15
7
15
7
12
DX-7555
PRINTED CIRCUIT BOARD VIEWS-3
(FROM SOLDERING SIDE)
DX-7555
A
1
2
3
4
5
BCDEFGH
U06 DISPLAY CIRCUIT PC BOARD (NADIS-8650)
Component side
Soldering side
No PC board view.
Look over the actual PC board on hand.
U10 SUPER PRECISION CLOCK PC BOARD (NADG-8725)
C8102
C8103
C8503
C8602
C8701
C8702
C8803
C8804
C8805
C8806
D8501
D8502
Q8501
Q8502
Q8601
Q8601
R8111
R8112
R8116
R8117
R8101
R8102
R8201
R8206
R8501
R8502
R8503
R8504
R8505
R8506
R8507
R8600
R8601
R8602
R8603
R8604
R8605
R8606
R8607
R8701
R8702
R8703 R8704
R8705 R8706
R8707
R8708
R8709
R8800
R8801
R8903
R8902
R8901
R8906
R8904
R8905
R8508
R8802
R8803
R8907
1
61
21
41
C8604
C8101
C8501
C8501
C8502
C8502
C8504
C8506
C8507
C8601
D8506
P8003A
P8001
Q8101
Q8101
Q8503
S8001
S8002
S8003
S8004
S8004
S8101
S8102S8103
S8201
S8202
U8001
U8001
X8601
J1002
J1006
J1003
J1004
J1005
J1038
J1007
J1008
J1009
J1010
J1011
J1012
J1013
J1015
J1040 J1016
J1017
J1018
J1019
J1020
J1021
J1022
J1023
J1024
J1042
J1028
J1027
J1029
J1030
J1031
J1032
J1034
J1035
J1036
J1014
J1037
PLAY STOP PAUSE
OP/CL
FF FR DISP
STANDBY
NCDIS-8650
25138650D
2
J1001
J1039
J1025
J1026
J1041
Q8101A
Q8101A
Q8101B
Q8101B
U8001AU8001A
2
2
2
2
22
22
27
20
7
30
22
25
25
30
20
20
20
20
30
30
15
15
7
27
27
7
15
25
7
20
15
7
15
7
12
DX-7555
PRINTED CIRCUIT BOARD VIEWS-3
(FROM SOLDERING SIDE)
DX-7555
A
1
2
3
4
5
BCDEFGH
U06 DISPLAY CIRCUIT PC BOARD (NADIS-8650)
Component side
Soldering side
No PC board view.
Look over the actual PC board on hand.
U10 SUPER PRECISION CLOCK PC BOARD (NADG-8725)
C9101
C9102
C9103
C9104
C9105
C9105
C9106
C9108
C9109
C9109
C9110
C9111
C9112
C9113
C9114
D9102
D9103
D9104
D9105
D9106
D9108
E9001
L9001
L9001
P9011
P9013C
P9013A
P9022A
P9022B
Q9001
R9201
R9202
R9203
R9204
R9205
R9206
RL9001
RL9001
T9001
T9001
J9001
J9007
J9003
J9004
J9005
J9008
J9002
AC-G
NCPS-8646
25138646
3
JL9033
J9006
AC-IN
P-SW
P-SW
T-2
T-2
ADD_+B
P-OFF
GND
+B
P-ON
WHIT
WHIT
E011
E012
AC-GAC-H
S9001
S9001
C9107
NCPS-864825138648
3
P9022
AC-G AC-H
T902 T902
C9115
NCPS-8647
25138647
J9101
J9102 R9102
R9101
J9103
AC-H
AC-G
JL9001
R9103
P9013
3
AC-G
AC-H
223 OR6
7
7
12
7
12
D9101
D9107
Q9002
7
DX-7555
PRINTED CIRCUIT BOARD VIEWS-4
(FROM SOLDERING SIDE)
A
1
2
3
4
5
BCD
U03 POWER SUPPLY CIRCUIT PC BOARD (NAPS-8646)
U04 POWER TRANSFORMER PC BOARD (NAPS-8647)
U05 POWER SWITCH PC BOARD
(NAPS-8648)
Component side Soldering side
Component side
Component side
Q4112 Q4113
R4104
R4105
R4106
R4107
R4108
R4109
R4110 R4111
R4114
R4115
Q8401
C8401
C8402
R8401
R8402
R8403
C4101C4102
C4103
C4104
C4105
C4106
C4109
Q4111
Q4111
R4101
R4102
R4112 R4113
J4001
R4103
JL4001A
J4003
J4002
NCETC-8653
J4005
J4006
25138653
P7002
J4004
3
P4101
P4101
JL4001B
C4107
E4102
C4108
C4111
NCETC-8652 25138652
2
L4001
L4001
C4121
E4101
1
6
E4103
J4007
J4008
P8003B
D8401
NCETC-8651
0
20
DX-7555
PRINTED CIRCUIT BOARD VIEWS-5
(FROM SOLDERING SIDE)
A
1
2
3
4
5
BCD
U07 STANDBY LED PC BOARD (NAETC-8651)
U08 HEADPHONE JACK PC BOARD (NAETC-8652)
U09 HEADPHONE AMP. PC BOARD (NAETC-8653)
Component side Soldering side
Component side
Component side Soldering side
Table of contents
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